Nonperturbative quark, gluon, and meson correlators of unquenched QCD
Nonperturbative quark, gluon, and meson correlators of unquenched QCD
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DOI：
10.1103/physrevd.97.054006
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发表时间：
2017-06
影响因子：
5
通讯作者：
Anton K. Cyrol;M. Mitter;J. Pawlowski;N. Strodthoff
中科院分区：
文献类型：
--
作者：
Anton K. Cyrol;M. Mitter;J. Pawlowski;N. Strodthoff
本文给出了真空中双味朗道规范QCD的夸克、胶子和介子1$PI关联函数的非微扰第一原理结果。这些相关函数携带了关于理论的全部信息。它们是通过求解它们的泛函重整化群方程在一个系统的顶点展开，旨在明显的收敛。这项工作是一个重要的先决条件，定量的QCD相图和强子谱在此框架内的第一性原理研究。特别地，我们计算了胶子，鬼，夸克和标量-赝标量介子传播子，以及胶子，鬼胶子，夸克-胶子，夸克，夸克-介子和介子相互作用。我们的研究结果强调了在半微扰机制中不同顶点的定量正确运行对于描述禁闭和自发手征对称性破缺的现象和尺度的至关重要性。
We present non-perturbative first-principle results for quark-, gluon- and meson $1$PI correlation functions of two-flavour Landau-gauge QCD in the vacuum. These correlation functions carry the full information about the theory. They are obtained by solving their Functional Renormalisation Group equations in a systematic vertex expansion, aiming at apparent convergence. This work represents a crucial prerequisite for quantitative first-principle studies of the QCD phase diagram and the hadron spectrum within this framework. In particular, we have computed the gluon, ghost, quark and scalar-pseudoscalar meson propagators, as well as gluon, ghost-gluon, quark-gluon, quark, quark-meson, and meson interactions. Our results stress the crucial importance of the quantitatively correct running of different vertices in the semi-perturbative regime for describing the phenomena and scales of confinement and spontaneous chiral symmetry breaking without phenomenological input.